WWE stars and twins Brie and Nikki Bella, both 32, have come a long way from sharing a cramped Los Angeles apartment and waiting tables at the Mondrian Hotel.

“It was totally different living together in our young 20s,” Nikki tells The Post. “We were trying to figure ourselves out . . . it was like summer camp.”

Now the Scottsdale, Ariz., natives are in the prime of their lives: Both have nabbed women’s championship belts and magazine covers, and they are the stars of a new reality show, “Total Bellas,” which shows them living under the same roof for the first time in more than a decade.

The six-episode series, premiering Wednesday at 8 p.m. EST on E!, follows the sisters outside the ring: Brie went on hiatus to spend time with her husband, retired WWE star Daniel Bryan; Nikki took a break after a neck injury to be with her partner, John Cena.

Seeing a rare opportunity to spend time together, Nikki invited Brie and Daniel to stay at her $6 million mansion in Land O’ Lakes, Fla., for three months until Nikki recovers.

“You’ll really see our relationships with our men and how we deal with each other,” says Brie, who lives in a modest Phoenix home with her husband. “We’re grown women now, and you’ll see how our dynamics have changed.”

Living together has been challenging at times. Brie, a self-described gluten-free hippie who loves Free People’s vegan pumps, has had a hard time adjusting to her sister’s Type-A lifestyle. Unlike her tree-hugging twin, Nikki loves high fashion, and her marble closet is stocked with Louis Vuitton bags and Christian Louboutin stilettos.